Cleveland oes-20.20 Manuel D’Utilisation

•  For 15 seconds the motor is de-energized and allowed to coast. 

•  For the next 2 minutes 220 VAC is sent from terminal 3 on connector X11 

through the normally closed auxiliary contacts of contactor K50 to the K5 
contactor coil  
◊

  K5 contactor closes and the motor turns CCW 

◊

  The normally closed auxiliary contacts on K5 open preventing the K50 

contactor from energizing. 

•  NOTE: If the door switch (S7) opens by the door opening, then the fan circuit 

is de-energized.  Then the motor will be pulsed in the opposite direction to 
“break” the fan.  This is to stop the fan quicker for the operator. 

c

  The steam generator circuit is energized.  Steam production takes precedence in 

the Rethermalization mode. 
•  220 VAC is sent from terminal 4 of connector X12 on the Control Board 

(A10) through the normally closed auxiliary contacts of K4 to the coil of 
Contactor K1 until the bypass probe (B5) senses 68 degrees F. 
◊

  The contactor K1 closes and 220 VAC is sent to the 9.4 KW element (E1) 

◊

  The normally closed auxiliary contact of K1 opens preventing the Hot Air 

Contactor K4 from energizing  

•  220 VAC is sent from terminal 8 of connector X11 on the Control Board 

(A10) through the normally closed auxiliary contacts of K44 to the coil of 
Contactor K2 until the bypass probe (B5) senses 68 degrees F. 
◊

  The contactor K2 closes and 220 VAC is sent to the 6.27 KW element 

(E2) 

◊

  The normally closed auxiliary contact of K2 opens preventing the Hot Air 

Contactor K4 from energizing 

◊

  If the reduced power option is chosen then the K2 Contactor is not 

energized. 

d

  After the bypass probe (B5) is satisfied then the hot air heat circuit is energized to 

increase the cabinet temperature to the setting. 
•  220 VAC is sent from terminal 3 of connector X12 on the Control Board 

(A10) through the normally closed auxiliary contacts of K2 and K1 to the coil 
of Contactor K4 until the cabinet reaches the set temperature. 
◊

  The contactor K4 closes and to legs of the 220 VAC is sent to the 18 KW 

element (E4) 

◊

  The normally closed auxiliary contact of K4 opens preventing the Steam 

Contactor K1 from energizing  

•  220 VAC is sent from terminal 7 of connector X11 on the Control Board 

(A10) to the coil of Contactor K44 until the cabinet reaches the set 
temperature. 
◊

  The contactor K44 closes and the third leg of 220 VAC is sent to the 18 

KW element (E4) 

◊

  If the reduced power option is chosen then the K44 Contactor is not 

energized.